Fiberoptic Polarization And Phase Modulator Utilizing Transparent Piezofilm with Indium Tin Oxide Electrodes

Files

Main article (1.09 MB)
Downloads: 1457

TR Number

Date

1995-06-01

Journal Title

Journal ISSN

Volume Title

Publisher

Optical Society of America

Abstract

A highly efficient optical polarization and phase modulator formed by the placement of a thin transparent piezofilm with indium tin oxide electrodes directly in the path of the output from an optical fiber is presented. Various configurations that differ in the clamping conditions, utilization of epoxy, and optical arrangement are presented. For a film thickness of 63.9 mu m, a linear phase-shifting coefficient of 0.131 rad/voltage peak (Vp) at 2 kHz and of 0.508 rad/Vp at 7.4 kHz is demonstrated. An intrinsic birefringence of 0.0328 between the directions along the stretch and its perpendicular in the plane of the film has been measured. The polarization modulation coefficient was determined to be 0.323 rad/Vp at 8.423 kHz, corresponding to a half-wave voltage of 8.353 Vp. Applications of the device involving concurrent spatiotemporal polarization and phase modulation are indicated.

Description

Keywords

Phase modulator, Polarization modulator, Fiberoptic devices, Transparent, Piezofilms, Optical interferometry, Signal processing, Transmission, Ellipsometry, Polyvinylidene fluoride films, Shift nonlinearity, Interferometry, Crystals, Sensors

Citation

V. S. Sudarshanam and S. B. Desu, "Fiber-optic polarization and phase modulator utilizing transparent piezofilm with indium tin oxide electrodes," Appl. Opt. 34, 1177-1189 (1995). doi: 10.1364/AO.34.001177